Functions and therapeutic potentials of exosomes in osteosarcoma

Abstract

Osteosarcoma, a primary malignant tumor of the skeleton, has a morbidity of 2.5 per 1 million people. The epiphysis of extremities is typically affected. Osteosarcoma has a high likelihood of early metastasis, rapid progression, and poor prognosis. The survival rate of patients with metastatic or recurrent osteosarcoma remains low; therefore, novel diagnostic and therapeutic methods are urgently needed. Exosomes, extracellular vesicles 30–150 nm in diameter, are secreted by various cells and are widely present in various body fluids. Exosomes are abundant in biologically active components, such as proteins, nucleic acids, and lipids. Exosomes participate in numerous physiological and pathological processes via intercellular substance exchange and signaling. This review presents the novel findings regarding exosomes in osteosarcoma diagnosis, prognosis, and therapeutics.